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Installing Avast Internet Security

Avast Internet Security is an advanced security software that prevents viruses, spyware, and other malicious threats from infecting your PC. Additionally, it protects you and your data against dangerous fake websites, ransomware, hackers, and spammers while you are online.

Install Avast Internet Security

Log into Windows as a user with administrator permissions and ensure no other application or antivirus software is running on your PC.

Click the button below to download the Avast Internet Security setup file, and save it in a familiar location on your PC (by default, all files are saved to your Downloads folder).
Download Avast Internet Security

Right-click the downloaded setup file avast_internet_security_setup_offline.exe and select Run as administrator from the context menu.

If prompted by the User Account Control dialog for permissions, click Yes (or Continue on older versions of Windows).

To change the default setup language, click the current language at the top-right corner of the screen. Then click Install to proceed with default installation.

To change the default setup language, click the current language at the top-right corner of the Avast Setup screen. Select Customize to proceed with custom installation.

Click Change to manually select your preferred location for saving Avast Free Antivirus program files, then select or deselect program components to install, and click Install.

If prompted to protect your mobile device, use the relevant options according to your preference, or click the X icon to close the screen.

When a network is detected, use the slider to select a Firewall mode:

Private Network: if you trust the network (for example, your home network).

Public Network: if the network is publicly shared (for example, the network at a cafe or airport).

Avast Internet Security is now installed on your PC and ready to use, but some components may not fully function until you restart your PC. The Avast user interface is accessible via the Avast system tray icon on your Windows taskbar or the Avast Internet Security icon on your desktop.

You need to activate Avast Internet Security using your valid activation code or license file from an order confirmation email, or via your Avast Account registered for the email address you used to make the purchase. For instructions, refer to the following article: